苏州混凝土水泥制品研究院有限公司

头部文案

发布时间:2020-01-06 00:00:00
全国建材科技期刊
全国中文核心期刊
中国科技论文统计源期刊
万方数据-数字化期刊群入网期刊
中国学术期刊(光盘版)全文收录期刊
华东地区优秀科技期刊
江苏省期刊方阵“双效期刊”
中国期刊网全文收录期刊
中国科技期刊数据库全文收录期刊

杂志简介

主办单位: 苏州混凝土水泥制品研究院
中国混凝土与水泥制品协会
  • 主编 : 李建华
  • 常务副主编 : 王春蓉
  • 刊期 : 月刊
  • 电话 : 0512-68285716
  • E-mail : sccpitg@126.com
  • 国内统一刊号(CN) : 32-1173/TU
  • 国际标准刊号(ISSN) : 1000-4637
  • 邮发代号 : 28-80
hunnitu 微信公众号
hunnitu 扫码订购杂志

混凝土研究

不同低温工况下混凝土的受压强度研究
不同低温工况下混凝土的受压强度研究
  • 时旭东,韩大全,崔一丹
2023年第1期
摘要
引用本文
摘   要:基于由常温(20 ℃)降至给定低温(-40、-80、-120、-160、-190 ℃)、经历低温再直接或以1 ℃/min匀速回至常温3种工况下的混凝土受压试验,研究了不同低温作用下混凝土的受压强度及其离散性。结果表明:随着低温温度的降低,混凝土的受压强度变化率高于常温时的受压强度变化率,且整体呈增大趋势,其离散性也明显变大;而经历低温再直接和以1 ℃/min匀速回至常温时混凝土的受压强度变化率相比常温时均有所提高,但与低温温度关联度较低,其离散性也均减小。 Abstract: The compressive strength and its discreteness of concrete subjected to different low temperatures were discussed through compressive experiment of concrete under three temperature conditions: cooling to given low temperatures(-40, -80, -120, -160, -190 ℃) from room temperature, and returning to room temperature directly and at a rate of 1 ℃/min after experiencing given low temperatures. The results show that the change rate of compressive strength of concrete at low temperature is higher than that at room temperature without experiencing action from low temperature and generally increases with the decrease in the low temperature, and its discreteness increases obviously. Compared with the change rate of compressive strength of concrete at room temperature, the change rate of compressive strength of concrete for returning directly and at the rate of 1 ℃/min to room temperature from low temperatures still increases, but the correlation with the low temperature is low and the compressive strength discreteness is also reduced.
时旭东,韩大全,崔一丹.不同低温工况下混凝土的受压强度研究[J].混凝土与水泥制品,2023(1):1-4,10. SHI X D,HAN D Q,CUI Y D.Study on Compressive Strength of Concrete Under Different Low Temperature Action Conditions[J].China Concrete and Cement Products,2023(1):1-4,10.
混凝土损伤修复过程流体动力学特性数值模拟
混凝土损伤修复过程流体动力学特性数值模拟
  • 兰春晖1,王楠星1,3,田 叶1,郝鹏远1,2
2023年第1期
摘要
引用本文
摘   要:基于细菌反硝化作用诱导碳酸盐沉积原理,建立了松散细颗粒材料与矿化胶结液注浆修复的混凝土裂缝三维多孔介质渗流数值模型。考虑混凝土断面的分形特征,选取Darcy速度驱动模型和Brinkman压力驱动模型下两种边界条件进行模拟,研究了两种驱动方式对修复过程的影响,得出了混凝土裂缝修复过程中灌浆液葡萄糖浓度、CaCO3生成量、裂缝内胶结颗粒孔隙率随反应时间变化的关系,给出了反应过程中模型内压力场和速度场分布云图。结果表明:随着分形维数的增加,反应用时减少,且在反应结束时,对于分形维数2.8的最光滑裂缝断面,注浆入口处的孔隙率为0.12,渗透系数为9.02×10-13 m/h,分别为混凝土修复前的30%和2.2%。 Abstract: Based on the theory of bacterial denitrification induced carbonate precipitation, the three-dimensions numerical models of porous media seepage were established, which aimed to simulate the process of concrete damage repairs via grouting mineralization solutions mixed with loosely fine grain materials. Considering the fractal characteristics of concrete section, two boundary conditions under Darcy velocity-driven model and Brinkman pressure-driven model were selected for simulation, the influence of the two driving methods on the repair process was studied, and the relationship between the concentration of glucose in the grouting solution, the generation amount of CaCO3 and the porosity of cemented particles in fractures in the concrete crack repair process with reaction time were obtained. The cloud picture of pressure and velocity within the crack models during the process of simulation reaction were also researched. The results show that with the increasing of fractal dimension, the reaction time is continue decreasing, and at the end of reaction, for the smoothest crack section with fractal dimension 2.8, the porosity at the grouting entrance of models is 0.12 and the permeability quotient is 9.02×10-13 m/h, which are 30% and 2.2% of the concrete before grouting repair, respectively.
兰春晖,王楠星,田叶,等.混凝土损伤修复过程流体动力学特性数值模拟[J].混凝土与水泥制品,2023(1):5-10. LAN C H,WANG N X,TIAN Y,et al.Numerical Modelings Study on Characteristic of Fluid Dynamics of Grouting Fluid on Process of Concrete Cracks Repair[J].China Concrete and Cement Products,2023(1):5-10.
低分子量磷酸基减水剂的合成、性能及应用 研究
低分子量磷酸基减水剂的合成、性能及应用 研究
  • 韩 正,黄 振,王 兵,王 涛
2023年第1期
摘要
引用本文
摘   要:以聚乙二醇单甲醚(MPEG-2000)作为主链,磷酸作为末端吸附基团,合成了低分子磷酸基减水剂PM-2,分析了红外吸收光谱、凝胶渗透色谱,并研究了PM-2的分散性能、黏土敏感性、水泥对其的吸附性、对水泥水化热的影响及在混凝土中的应用效果。结果表明:与聚羧酸减水剂PCE-1相比,所制备的PM-2的分散性保持能力强,黏土敏感性低,水泥颗粒对其的吸附量少,同时具有一定的延缓水泥水化的效果,但减水效果相对较低;通过PCE-1和PM-2复配可以显著提升混凝土的坍落度及其保持能力,且不会降低混凝土强度。 Abstract: A low molecular weight phosphate based water reducer was synthesized by using polyethylene glycol monomethyl ether (MPEG-2000) as the main chain and phosphoric acid as the terminal adsorption group. The molecular structure and molecular weight were determined by IR and GPC. The dispersion property of PM-2, clay sensitivity, adsorption of cement, influence on cement hydration heat and application effect in concrete were studied. The results show that, compared with polycarboxylic acid water reducer PCE-1, the prepared PM-2 has strong dispersion retention ability, low clay sensitivity, less adsorption capacity of cement particles, and has a certain effect of delaying cement hydration, but the water reducing effect is relatively low. By mixing PCE-1 and PM-2, the concrete slump and its retention capacity can be significantly improved without reducing the concrete strength.
韩正,黄振,王兵,等.低分子量磷酸基减水剂的合成、性能及应用研究[J].混凝土与水泥制品,2023(1):11-14,20. HAN Z,HUANG Z,WANG B,et al.Synthesis, Properties and Application of Low Molecular Weight Phosphate Group Water Reducer[J].China Concrete and Cement Products,2023(1):11-14,20.
降黏型聚羧酸减水剂的制备技术研究进展
降黏型聚羧酸减水剂的制备技术研究进展
  • 赵 潜1,孟祥杰1,2,邹 亮1,李 卫1,余林文2
2023年第1期
摘要
引用本文
摘   要:基于聚羧酸减水剂的作用机理,从原材料(大单体的分子量和封端基团、小单体的亲疏水性、单体的官能团活性)、制备方法(合成工艺、复配方式)方面总结了近年来国内外关于降黏型聚羧酸减水剂制备技术的研究进展,分析了降黏机理,并对降黏型聚羧酸减水剂的可行性研究进行了展望。 Abstract: Based on the mechanism of action of polycarboxylic acid superplasticizer, from raw materials (molecular weight and sealing group of large monomer, hydrophilicity and hydrophobicity of small monomer, functional group activity of monomer), preparation method(synthetic process, compounding means), the research progresses on the preparation technology of viscosity-reducing polycarboxylic acid superplasticizer are reviewed at home and abroad in recent years. The viscosity reducing mechanism is analyzed, and the feasibility research of viscosity-reducing polycarboxylic acid superplasticizer is prospected.
赵潜,孟祥杰,邹亮,等.降黏型聚羧酸减水剂的制备技术研究进展[J].混凝土与水泥制品,2023(1):15-20. ZHAO Q,MENG X J,ZOU L,et al.Research Progress in Preparation Technology of Viscosity-reducing Polycarboxylic Acid Superplasticizer[J].China Concrete and Cement Products,2023(1):15-20.
三轴循环荷载作用下混凝土的力学性能及损伤特征研究
三轴循环荷载作用下混凝土的力学性能及损伤特征研究
  • 吴建福,胡力绳,田亚洲,刘俊杰,何 强
2023年第1期
摘要
引用本文
摘   要:开展了不同循环加卸载(荷载分别为单轴抗压强度20%、30%、40%、50%、60%、70%和80%)作用下的三轴试验,研究了不同循环荷载作用对灌注桩混凝土力学性能的影响,并分析了混凝土的损伤特征。结果表明:在各级循环加卸载作用下,混凝土的应力-应变曲线出现内凹和右移推进现象;弹性模量随循环次数的增加先增加后减小;在各级循环内,泊松比呈“减小-稳定-增大”的变化规律,第90次循环后超过名义泊松比,混凝土损伤逐渐积累加深,轴向和横向不可逆应变均随循环次数的增加而增加;屈服阶段前混凝土的累计损伤小,屈服阶段后混凝土的横向累计损伤参数比轴向大。 Abstract: Triaxial tests were carried out under different cyclic loading and unloading (loads were 20%, 30%, 40%, 50%, 60%, 70% and 80% of the uniaxial compressive strength), and the effects of different cyclic loads on the mechanical properties of cast-in-place pile concrete were studied, and the damage characteristics of the concrete were analyzed. The results show that the stress-strain curves of concrete specimens appear concave and right shift in the cyclic loading and unloading conditions at all levels. The elastic modulus first increases and then decreases with the increase of the number of cycles. The internal Poisson′s ratio of each cycle shows a change law of "decreasing-stabilizing-increasing". After the 90th cycles, it exceeds the nominal Poisson′s ratio and the concrete damage gradually accumulates and deepens. The axial and transverse irreversible strains increase with the increase of the number of cycles. The concrete cumulative damage before the yield stage is small, and the cumulative damage parameters after the yield stage are larger than those in the axial direction.
吴建福,胡力绳,田亚洲,等.三轴循环荷载作用下混凝土的力学性能及损伤特征研究[J].混凝土与水泥制品,2023(1):21-24. WU J F,HU L S,TIAN Y Z,et al.Study on Mechanical Properties and Damage Characteristics of Concrete Under Triaxial Cyclic Loading[J].China Concrete and Cement Products,2023(1):21-24.
掺石灰石粉的清水混凝土性能与工艺研究
掺石灰石粉的清水混凝土性能与工艺研究
  • 蔡 昱1,2,盖珂瑜1,3,陈露一1,3,龙 勇1,3,刘俊利1,3,韦鹏亮1,2
2023年第1期
摘要
引用本文
摘   要:研究了不同粒径、掺量的石灰石粉对水泥胶砂工作性和力学性能的影响以及石灰石粉掺量对清水混凝土力学性能和耐久性能的影响,对比优选了清水混凝土施工脱模剂和模板。结果表明:水泥胶砂早期强度受石灰石粉细度和掺量的影响较大,在相同掺量时,粒径小的石灰石粉制备的胶砂流动性小、抗压、抗折强度大;清水混凝土的抗压强度随着石灰石粉掺量的增加而增大,电通量和氯离子扩散系数则随着石灰石粉掺量的增加而减小;当石灰石粉掺量为15%时,清水混凝土的力学性能和耐久性能最优;水性脱模剂的脱模效果优于油性脱模剂和模板漆,不锈钢模板的脱模效果优于普通钢模板。 Abstract: The influence of the particle size and amount of limestone powder on the workability and mechanical properties of mortar were investigated, and the effects of amount of limestone powder on the mechanical properties and durability of fair-faced concrete were studied, and the release agent and formwork for fair-faced concrete construction were optimized. The results show that the early strength of mortar is greatly affected by the particle size and amount of limestone powder. The mortar with small particle size shows a smaller fluidity and higher compressive strength at the same amount. The compressive strength of fair-faced concrete increases with the increase of the amount of limestone powder, while the electric flux and chloride diffusion coefficient decrease with the increase of the amount of limestone powder. The mechanical properties and durability of fair-faced concrete are the best when the amount of limestone powder is 15%. The appearance quality of waterborne release agent is better than that of oily release agent and template paint, and the appearance quality of stainless steel template is better than that of ordinary template.
蔡昱,盖珂瑜,陈露一,等.掺石灰石粉的清水混凝土性能与工艺研究[J].混凝土与水泥制品,2023(1):25-29. CAI Y,GE K Y,CHEN L Y,et al.Study on Properties and Technology of Fair-faced Concrete Mixed with Limestone Powder[J].China Concrete and Cement Products,2023(1):25-29.
SiO2气凝胶在砂浆和混凝土中的应用进展
SiO2气凝胶在砂浆和混凝土中的应用进展
  • 阿如罕1,解盼盼1,2,鞠殿东3
2023年第1期
摘要
引用本文
摘   要:介绍了SiO2气凝胶的优异性能,将其掺入砂浆、普通混凝土、泡沫混凝土、轻骨料混凝土后,研究了其对砂浆和各类混凝土性能的影响,对比了掺入SiO2气凝胶前后混凝土保温性能、力学性能的变化特征,并对SiO2气凝胶复合砂浆和混凝土的未来发展进行了展望。 Abstract: The excellent properties of SiO2 aerogel are introduced. After mixing it into mortar and ordinary concrete, foam concrete and lightweight aggregate concrete, the influence of SiO2 aerogel on mortar and various concrete performance is summarized. The change characteristics of concrete before and after incorporating SiO2 aerogel are presented from the thermal insulation performance and mechanical property, and the future development of SiO2 aerogel composite mortar and concrete is prospected.  
阿如罕,解盼盼,鞠殿东.SiO2气凝胶在砂浆和混凝土中的应用进展[J].混凝土与水泥制品,2023(1):30-34. A R H,XIE P P,JU D D.Application Progress of SiO2 Aerogel in Mortar and Concrete[J].China Concrete and Cement Products,2023(1):30-34.

水泥混凝土制品

罗马柱式预应力混凝土桩的抗弯性能研究
罗马柱式预应力混凝土桩的抗弯性能研究
  • 张栩栩,张耀文,茹军辉,何友林
2023年第1期
摘要
引用本文
摘   要:通过对传统管桩截面进行凹面化处理,设计了罗马柱式预应力混凝土桩(罗马桩),并采用理论计算、试验验证和数值模拟相结合的方式,探究了罗马桩的抗弯性能。结果表明:同等条件下,罗马桩截面周长更长,可增加桩身与土体的接触面积;利用结构等效法可简化罗马桩截面参数的计算;罗马桩的抗弯性能与传统管桩相当。 Abstract: In order to increase the contact area between the pile body and the soil, improve the bearing capacity of the pile body, the Roman column style prestressed concrete pile was designed through the concavity treatment of the section. Theoretical calculation, test verification and numerical simulation were used to study the flexural performance of the Roman column style prestressed concrete piles. The results show that under the same condition, the section circumference of the Roman column style prestressed concrete piles is longer, which can increase the contact area between the pile body and the soil. The calculation of section parameters of Roman column style prestressed concrete piles can be simplified by using the structural equivalent method. And the bending strength properties of Roman column style prestressed concrete piles are better than that of the common piles.
张栩栩,张耀文,茹军辉,等.罗马柱式预应力混凝土桩的抗弯性能研究[J].混凝土与水泥制品,2023(1):35-38,46. ZHANG X X,ZHANG Y W,RU J H,et al.Research on Bending Strength of Roman Column Style Prestressed Concrete Piles[J].China Concrete and Cement Products,2023(1):35-38,46.
组合壳地下综合管廊关键节点力学性能试验研究
组合壳地下综合管廊关键节点力学性能试验研究
  • 李仁康1,姚爱军1,董 磊2
2023年第1期
摘要
引用本文
摘   要:为提高预制地下综合管廊的整体抗震性能,研发了新型组合壳地下综合管廊,并对8个足尺节点试件(4个组合壳管廊节点和4个现浇管廊节点试件)进行了低周反复荷载试验。研究结果表明:组合壳管廊节点和现浇管廊节点的破坏现象相似,L型节点的破坏模式为节点的弯剪破坏,T型节点的破坏模式为节点的弯曲破坏;组合壳管廊节点和现浇管廊节点的滞回曲线形状相似,L型节点的滞回曲线呈“弓形”,T型节点的滞回曲线呈“梭形”,T型节点较L型节点抗震性能优良;现浇管廊底部节点的承载力略高于组合壳管廊底部节点,组合壳管廊顶部节点的承载力略高于现浇管廊顶部节点;各节点的延性系数在3.09~14.76之间,各节点延性良好;组合壳管廊节点的耗能能力强于现浇管廊节点,T型节点的耗能能力强于L型节点;各节点刚度退化规律相似,现浇管廊节点的刚度略高于组合壳管廊节点的刚度。在此基础上,对组合壳管廊节点进行了安全性评价,并提出了相关结构优化措施。 Abstract: In order to improve the seismic performance of prefabricated underground utility tunnel, a new type of composite shell underground utility tunnel was developed, and low cyclic load tests were carried out on 8 full-size specimens, including 4 composite shell utility tunnels and 4 cast-in-place utility tunnels. The results show that the failure modes of the composite shell joints and the corresponding cast-in-place joints are similar. The failure mode of the L-shaped joint is bending-shear failure, and the failure mode of the T-shaped joint is bending failure. The shape of the hysteresis curves of the composite shell joints is similar to that of the corresponding cast-in-place joints. The hysteresis curves of the L-shaped joints are bow-shaped and those of the T-shaped joints are shuttle-shaped. The T-shaped joints have better seismic performance than the L-shaped joints. The bearing capacity of the joints at the bottom of the cast-in-place shell is slightly higher than that at the bottom of the composite shell, and the bearing capacity of the joints at the top of the composite shell is slightly higher than that at the top of the cast-in-place shell. The ductility coefficient of each joint is between 3.09 and 14.76, and the ductility of each joint is good. The energy dissipation capacity of the composite shell joint is stronger than that of the cast-in-place joint, and the energy dissipation capacity of the T-shaped joint is stronger than that of the L-shaped joint. The stiffness degradation of each joint is similar, and the stiffness of cast-in-place joint is slightly higher than that of composite shell joint. On this basis, the safety evaluation of composite shell joint is carried out and relevant structural optimization measures are put forward.
李仁康,姚爱军,董磊.组合壳地下综合管廊关键节点力学性能试验研究[J].混凝土与水泥制品,2023(1):39-46. LI R K,YAO A J,DONG L.Experimental Study on Mechanical Properties of Key Joints of Composite Shell Underground Utility Tunnel[J].China Concrete and Cement Products,2023(1):39-46.
装配式地铁车站预制构件模具的设计与工程应用
装配式地铁车站预制构件模具的设计与工程应用
  • 张金镌,王彦涛,逄 玲,刘晓凯
2023年第1期
摘要
引用本文
张金镌,王彦涛,逄玲,等.装配式地铁车站预制构件模具的设计与工程应用[J].混凝土与水泥制品,2023(1):47-49. ZHANG J J,WANG Y T,PANG L,et al.Design and Engineering Application of Prefabricated Component Mold for Assembled Metro Station[J].China Concrete and Cement Products,2023(1):47-49.

纤维水泥及制品

硅灰和稻壳灰对竹浆纤维水泥基复合材料抗劣化性能的影响
硅灰和稻壳灰对竹浆纤维水泥基复合材料抗劣化性能的影响
  • 王清梦,谢晓丽,高 健,郑坤毅
2023年第1期
摘要
引用本文
摘   要:以硅灰和稻壳灰作为掺合料(固定总掺量为40%)、竹浆纤维作为增强材,采用抄取法制备了纤维增强水泥基复合材料,并研究了干湿循环和热水浸泡老化试验下,不同硅灰和稻壳灰掺入比例对竹浆纤维水泥基复合材料力学性能的影响。结果表明:不同掺入比例的硅灰和稻壳灰均有效提高了竹浆纤维水泥基复合材料在干湿循环和热水浸泡老化下的抗弯强度和断裂韧性,其中,单掺40%硅灰的提高效果最好。 Abstract: With silica fume and rice husk ash as the admixture(the total content was 40%) and bamboo fiber as the reinforcement, the fiber reinforced cement-based composites were prepared by the slurry vacuum de-watering technique. The effects of different silica fume and rice husk ash proportions on the mechanical properties of bamboo fiber reinforced cement-based composites under the dry wet cycle and hot water immersion aging tests were studied. The results show that the bending strength and fracture toughness of bamboo fiber reinforced cement-based composites under dry wet cycle and hot water immersion aging are effectively improved by adding silica fume and rice husk ash of different proportions, and the single addition of 40% silica fume has the best effect.
王清梦,谢晓丽,高健,等.硅灰和稻壳灰对竹浆纤维水泥基复合材料抗劣化性能的影响[J].混凝土与水泥制品,2023(1):50-55. WANG Q M,XIE X L,GAO J,et al.Effect of Silica Fume and Rice Husk Ash on Deterioration Resistance of Bamboo Fiber Reinforced Cement-based Composites[J].China Concrete and Cement Products,2023(1):50-55.
玄武岩纤维混凝土耐高温性能研究综述
玄武岩纤维混凝土耐高温性能研究综述
  • 王羿博1,王守兴1,卢丽敏1,2,袁广林1,2
2023年第1期
摘要
引用本文
摘   要:介绍了玄武岩纤维(BF)对混凝土高温损伤的抑制机理,从力学性能、质量损失、微观结构方面综述了玄武岩纤维混凝土(BFRC)的耐高温性能,并基于BFRC存在的主要问题对其未来研究方向进行了展望。 Abstract: The inhibiting mechanism of basalt fiber (BF) on concrete damage at high temperature is introduced, and the high temperature resistance of basalt fiber reinforced concrete (BFRC) is  summarized from the aspects of mechanical properties, mass loss and microstructure. Based on the main problems of BFRC, the future research directions of BFRC are also prospected.
王羿博,王守兴,卢丽敏,等.玄武岩纤维混凝土耐高温性能研究综述[J].混凝土与水泥制品,2023(1):56-59. WANG Y B,WANG S X,LU L M,et al.Review on High Temperature Resistance of Basalt Fiber Reinforced Concrete[J].China Concrete and Cement Products,2023(1):56-59.

房建材料及制品

基于ABAQUS的钢筋混凝土柱拟静力试验非线性分析
基于ABAQUS的钢筋混凝土柱拟静力试验非线性分析
  • 曹晓罗
2023年第1期
摘要
引用本文
摘  要:为了研究ABAQUS在钢筋混凝土结构拟静力试验数值分析中的适用性,选取了美国太平洋地震工程研究中心结构性能数据库中的一根矩形截面钢筋混凝土柱(RC柱)的拟静力试验数据,在ABAQUS中分别采用实体单元和纤维梁单元两种方式对其在低周往复荷载下的抗震性能进行了数值模拟,并与试验结果进行了对比。结果表明:剪跨比不仅影响了RC柱的最终破坏形态,还会影响其抗侧刚度,且剪跨比越大,抗侧刚度越小;轴压比的增大会导致骨架曲线出现下降段,使RC柱的延性降低;混凝土强度对滞回曲线影响较小,纵筋配筋率的增大可有效提高RC柱的水平抗侧力。 Abstract: In order to study the applicability of ABAQUS in the numerical analysis of quasic-static test of reinforced concrete structure, the quasic-static test data of a rectangular reinforced concrete column (RC column) in the structural performance database of the Pacific Earthquake Engineering Research Center in the United States was selected, and the seismic performance of the column under low cyclic reciprocating loads was numerically simulated in ABAQUS by using solid element and fiber beam element respectively, and compared with the test results. The results show that the shear span ratio affects the ultimate failure mode of RC columns, and the greater the shear span ratio, the smaller the lateral stiffness. The increase of axial compression ratio will lead to the decrease of the skeleton curve, which will reduce the ductility of RC columns. The concrete strength has little effect on the hysteretic curve, and the increase of longitudinal reinforcement ratio can effectively improve the horizontal lateral bearing capacity of RC columns.
曹晓罗.基于ABAQUS的钢筋混凝土柱拟静力试验非线性分析[J].混凝土与水泥制品,2023(1):60-65. CAO X L.Quasic-static Nonlinear Test Analysis of Reinforced Concrete Columns Based on ABAQUS[J].China Concrete and Cement Products,2023(1):60-65.
丁苯橡胶泡沫混凝土的孔结构与宏观性能研究
丁苯橡胶泡沫混凝土的孔结构与宏观性能研究
  • 伍怡璇,李 静,黄子锐,欧阳启健,孙浩翔,呼浩楠
2023年第1期
摘要
引用本文
摘   要:在聚灰比为0、1%、3%、5%的情况下,研究了丁苯橡胶对泡沫混凝土干密度和抗折、抗压强度的影响,并通过显微图像处理和SEM从孔结构角度分析了丁苯橡胶对泡沫混凝土的改性机理。结果表明:随着聚灰比的增加,泡沫混凝土的孔隙率和平均孔径均呈先增后减的趋势,孔隙圆度值略有降低,导致干密度和抗压强度均先减小后增大,抗折强度先略有降低后快速增大。 Abstract: The effects of styrene-butadiene rubber on the dry density, flexural strength and compressive strength of foamed concrete were studied when the polymer-cement ratio was 0, 1%, 3% and 5%, and the modification mechanism of styrene-butadiene rubber on foamed concrete was analyzed from the perspective of pore structure by microscopic image processing and SEM. The results show that with the increase of polymer-cement ratio, the porosity and average pore size of foamed concrete increase first and then decrease, and the porosity roundness value decreases slightly, resulting in the dry density and compressive strength decrease first and then increase, and the flexural strength decreases slightly first and then increases rapidly.
伍怡璇,李静,黄子锐,等.丁苯橡胶泡沫混凝土的孔结构与宏观性能研究[J].混凝土与水泥制品,2023(1):66-69,73. WU Y X,LI J,HUANG Z R,et al.Study on Pore Structure and Macro-properties of Styrene-butadiene Rubber Foamed Concrete[J].China Concrete and Cement Products,2023(1):66-69,73.
可再分散乳胶粉对石膏基自流平砂浆性能的影响
可再分散乳胶粉对石膏基自流平砂浆性能的影响
  • 聂宗浩1,岳雪涛1,夏芙蓉1,于成鑫1,闫浩康2,刘诚诚3
2023年第1期
摘要
引用本文
摘   要:以脱硫石膏为主要胶凝材料,掺入普通硅酸盐水泥和外加剂,制备了石膏基自流平砂浆,研究了不同掺量(0、1%、2%、3%、4%)的可再分散乳胶粉对石膏基自流平砂浆工作性、力学性能和耐水性能的影响,并采用XRD和SEM进行了微观分析。结果表明:掺入适量的可再分散乳胶粉能够提高石膏基自流平砂浆的流动度;可再分散乳胶粉的掺入降低了石膏基自流平砂浆的抗压强度、抗折强度和耐水性能,同时降低了压折比,从而提高了石膏基自流平砂浆的韧性和抗裂性,降低了脆性;石膏基自流平砂浆的水化产物主要为二水石膏、钙矾石等。 Abstract: Using desulfurization gypsum as the main cementitious material, mixed with ordinary silicate cement and admixtures, the gypsum-based self-leveling mortar was prepared. The effects of different contents(0, 1%, 2%, 3%, 4%) of redispersible latex powder on the workability, mechanical properties and water resistance of gypsum-based self-leveling mortar were studied, and the microscopic analysis was carried out by XRD and SEM. The results show that adding appropriate content of redispersible latex powder can improve the fluidity of gypsum-based self-leveling mortar. The addition of redispersible latex powder reduces the compressive strength, flexural strength and water resistance of gypsum-based self-leveling mortar, and reduces the compression flexural ratio, thereby improving the toughness and crack resistance of gypsum-based self-leveling mortar and reducing brittleness. The hydration products of gypsum-based self-leveling mortar are gypsum dihydrate, ettringite and so on. 
聂宗浩,岳雪涛,夏芙蓉,等.可再分散乳胶粉对石膏基自流平砂浆性能的影响[J].混凝土与水泥制品,2023(1):70-73. NIE Z H,YUE X T,XIA F R,et al.Effect of Redispersible Latex Powder on Properties of Gypsum-based Self-leveling Mortar YU Cheng-xin, YAN Hao-kang, LIU Cheng-cheng[J].China Concrete and Cement Products,2023(1):70-73.

标准解读

GB/T 40399—2021《装配式混凝土建筑用预制部品通用技术条件》主要条文解析
GB/T 40399—2021《装配式混凝土建筑用预制部品通用技术条件》主要条文解析
  • 王春蓉1,钮如嵩1,胡佳星2,奚飞达1,田 寅1,史星祥1,潘从玲1,邓稚川1,夏如茜1
2022年第6期
摘要
引用本文
新制定的国家标准GB/T 40399—2021《装配式混凝土建筑用预制部品通用技术条件》已于 2022年3月1日实施。为便于该标准的使用方准确理解标准条款的具体含义,正确贯彻实施标准条款的具体要求和规定,介绍了该标准的编制背景和意义,并对标准的主要条款及其制定理由进行了解释和说明。 The newly formulated national standard of GB/T 40399—2021 General Technical Conditions for Precast Concrete Part of Prefabricated Construction has been officially implemented in March 1st, 2022. In order to facilitate understanding the specific meaning of the standard terms and correctly implement the specific requirements and provisions of the standard terms by the users, the purpose and significance of the standard are introduced, and the main provisions of the standard and the revision reasons are expained.
王春蓉,钮如嵩,胡佳星,等.GB/T 40399—2021《装配式混凝土建筑用预制部品通用技术条件》主要条文解析[J].混凝土与水泥制品,2022(6):71-76. WANG C R,NIU R S,HU J X,et al.Analysis of Main Clauses in GB/T 40399—2021 General Technical Conditions for Precast Concrete Part of Prefabricated Construction[J].China Concrete and Cement Products,2022(6):71-76.

检测及试验方法研究

港口在役混凝土结构的检测维护框架模型分析
港口在役混凝土结构的检测维护框架模型分析
  • 张灵灵1,王海超1,2,姜佩弦1
2022年第9期
摘要
引用本文
摘   要:基于港口在役混凝土结构的劣化过程和劣化状态建立了耐久性评定等级,从耐久性、经济性和可持续性角度对结构进行了层次化评价,其中,耐久性评估值N1包括结构形式和劣化指标评估值,采用加权平均法得到;经济性评估值N2包括日常检测维护成本、失效状态成本和经济损失成本,采取指标权重法确定;可持续性评估值N3选用指数函数进行计算;耐久性、经济性和可持续性指标的评估因子通过0-1强制评分法确定为1/2、1/3和1/6,经过加权得到了结构的层次化评估值。在层次化评估值的基础上给出了结构的检测维护框架模型,并通过某港口地区的在役混凝土桥梁结构验证了该框架模型的合理性。 Abstract: The durability evaluation grade is established based on the deterioration process and deterioration state of the in-service concrete structure in ports, and the structure is evaluated from the perspectives of durability, economy and sustainability. The durability evaluation value N1 includes the structural form and deterioration index evaluation value, which is obtained by weighted average method. Economic evaluation value N2 includes daily inspection and maintenance cost, failure state cost and economic loss cost, which is determined by index weight method. The sustainability evaluation value N3 is calculated by exponential function. The evaluation factors of durability, economy and sustainability indicators are determined as 1/2, 1/3 and 1/6 by 0-1 compulsory scoring method, and the hierarchical evaluation value of the structure is obtained by weighting. Based on the hierarchical evaluation value, the frame model of structure inspection and maintenance is given, and the rationality of the frame model is verified by the in-service concrete bridge structure in a port area.  
张灵灵,王海超,姜佩弦.港口在役混凝土结构的检测维护框架模型分析[J].混凝土与水泥制品,2022(9):82-87,91. ZHANG L L,WANG H C,JIANG P X.Analysis of Frame Model for Inspection and Maintenance of In-service Concrete Structure in Ports[J].China Concrete and Cement Products,2022(9):82-87,91.

节能降碳

高钛重矿渣砂对超高性能混凝土(UHPC)性能的影响
高钛重矿渣砂对超高性能混凝土(UHPC)性能的影响
  • 陈 超,张 恒
2023年第1期
摘要
引用本文
摘   要:研究了高钛重矿渣砂的冷却方式、粒径、细度模数和颗粒级配、渣粉含量、预湿时间对超高性能混凝土(UHPC)工作性和力学性能的影响,采用SEM观察了UHPC的微观结构。结果表明:与慢冷高钛重矿渣砂相比,掺快冷高钛重矿渣砂UHPC的工作性略差,但力学性能较好;随着快冷高钛重矿渣砂粒径的增大,UHPC的工作性和力学性能均先提升后下降,推荐粒径为0.60~2.36 mm;采用细度模数为2.6且位于Ⅱ区中值的快冷高钛重矿渣砂制备的UHPC工作性和力学性能优异;随着渣粉含量的增加,UHPC的工作性和力学性能先提升后下降,快冷高钛重矿渣砂中的渣粉含量应控制在6%以下;随着快冷高钛重矿渣砂预湿时间的增加,UHPC的工作性和力学性能先提升后基本不变,最佳预湿时间为12 h。 Abstract: The effects of cooling mode, particle size, fineness modulus and particle size distribution, slag powder content and pre-wetting time of high titanium heavy slag sand on the workability and mechanical properties of ultra-high performance concrete(UHPC) were studied, and the microstructure of UHPC was observed by SEM. The results show that compared with slow-cooling high titanium heavy slag sand, the UHPC mixed with fast-cooling high titanium heavy slag sand has poorer workability, but better mechanical properties. With the increase of particle size of fast-cooling high titanium heavy slag sand, the workability and mechanical properties of UHPC are improved first and then decreased, and the recommended particle size is 0.60~2.36 mm. The UHPC prepared with fast-cooling high titanium heavy slag sand with fineness modulus of 2.6 and median value in zone Ⅱ has excellent workability and mechanical properties. With the increase of slag powder content, the workability and mechanical properties of UHPC are improved first and then decreased, and the slag powder content in fast-cooling high titanium heavy slag sand should be controlled below 6%. With the increase of pre-wetting time of fast-cooling high titanium heavy slag sand, the workability and mechanical properties of UHPC are improved first and then basically unchanged, and the optimal pre-wetting time is 12 h.
陈超,张恒.高钛重矿渣砂对超高性能混凝土(UHPC)性能的影响[J].混凝土与水泥制品,2023(1):74-78,83. CHEN C, ZHANG H.Effect of High Titanium Heavy Slag Sand on the Properties of Ultra-high Performance Concrete (UHPC)[J].China Concrete and Cement Products,2023(1):74-78,83.
硫酸亚铁和硝酸钙对超硫酸盐水泥强度的影响
硫酸亚铁和硝酸钙对超硫酸盐水泥强度的影响
  • 季军荣1,武双磊2,周威杰2,奚莹莹1,周润铎2,周 洲1
2023年第1期
摘要
引用本文
摘   要:采用矿渣制备了超硫酸盐水泥,研究了硫酸亚铁和硝酸钙的掺量和掺加方式对超硫酸盐水泥3 d、7 d、28 d和90 d抗压、抗折强度的影响。结果表明:单掺适量硫酸亚铁时,超硫酸盐水泥各龄期的抗压、抗折强度均有所提高,但掺量过大(>0.5%)时对早期(3 d)抗压、抗折强度不利;单掺硝酸钙时,超硫酸盐水泥各龄期的抗压、抗折强度均有所降低;复掺硫酸亚铁和硝酸钙时,超硫酸盐水泥各龄期的抗压、抗折强度较未掺和单掺时均有明显提高,其中,复掺1.5%硫酸亚铁和2.0%硝酸钙对强度的提高效果最好。 Abstract: The supersulfate cement was prepared with slag, and the effects of ferrous sulfate and calcium nitrate on the compressive and flexural strength of supersulfate cement at 3 d, 7 d, 28 d and 90 d were studied. The results show that the compressive and flexural strength of supersulfate cement at all ages are improved with the appropriate content of ferrous sulfate alone, but the early compressive and flexural strength (3 d) are not good when the content is too large (>0.5%). When adding calcium nitrate alone, the compressive and flexural strength of each age of supersulfate cement decrease. When mixed with ferrous sulfate and calcium nitrate, the compressive and flexural strength of supersulfate cement at each age are significantly improved compared with those of blank group and single adding group, among them, mixed with 1.5% ferrous sulfate and 2.0% calcium nitrate has the best effect.
季军荣,武双磊,周威杰,等.硫酸亚铁和硝酸钙对超硫酸盐水泥强度的影响[J].混凝土与水泥制品,2023(1):79-83. JI J R,WU S L,ZHOU W J,et al.Effects of Ferrous Sulfate and Calcium Nitrate on Strength of Supersulfate Cement[J].China Concrete and Cement Products,2023(1):79-83.
玄武岩石粉对HPC工作性及抗氯离子渗透 性能的影响
玄武岩石粉对HPC工作性及抗氯离子渗透 性能的影响
  • 成 功1,周 权2,陈士堃1,闫东明1,初晓明2,刘 毅1
2023年第1期
摘要
引用本文
摘   要:研究了玄武岩石粉的粒径和替代率0、10%、20%、30%(等质量替代水泥)对高性能混凝土(HPC)工作性和抗氯离子渗透性能的影响,并结合压汞分析技术从微观角度探讨了玄武岩石粉的作用机理。结果表明:随着玄武岩石粉粒径和替代率的增加,HPC的流动度和初凝时间均呈增大趋势;随着玄武岩石粉替代率的增加,HPC的电通量先减小后增大;随着玄武岩石粉粒径的增加,HPC的电通量呈增大趋势;玄武岩石粉的粒径对HPC抗氯离子渗透性能的影响与其替代率紧密相关,当替代率较低时,粒径越小,HPC的抗氯离子渗透性能越好,而当替代率较高时,减小粒径对HPC抗氯离子渗透性能的改善效果不大;玄武岩石粉的填充效应和潜在活性可以提高基体的密实度,从而提高HPC的抗氯离子渗透性能。 Abstract: The influence of particle size and replacement rate(0, 10%, 20%, 30%) of basalt powder on the workability and chloride ion penetration resistance of high performance concrete(HPC) was studied, and the action mechanism of basalt powder was discussed from the microscopic perspective in combination with mercury intrusion analysis technology. The results show that the fluidity and initial setting time of HPC increase with the increase of basalt powder size and replacement rate. With the increase of basalt powder replacement rate, the electrical flux of HPC decreases first and then increases. With the increase of particle size of basalt powder, the electrical flux of HPC increases. The influence of particle size of basalt powder on the chloride ion penetration resistance of HPC is closely related to its replacement rate. When the replacement rate is low, the smaller the particle size, the better the chloride ion penetration resistance of HPC, while when the replacement rate is high, the reduction of particle size has a small impact on the chloride ion penetration resistance of HPC. The filling effect and potential activity of basalt powder can improve the compactness of matrix, thus improving the chloride ion penetration resistance of HPC.
成功,周权,陈士堃,等.玄武岩石粉对HPC工作性及抗氯离子渗透性能的影响[J].混凝土与水泥制品,2023(1):84-87. CHENG G,ZHOU Q,CHEN S K,et al.Effect of Basalt Powder on Workability and Chloride Ion Penetration Resistance of High Performance Concrete(HPC)[J].China Concrete and Cement Products,2023(1):84-87.
石灰石尾矿粉对全再生骨料混凝土性能的影响
石灰石尾矿粉对全再生骨料混凝土性能的影响
  • 袁继东1,任启富1,范晓玲2
2023年第1期
摘要
引用本文
摘   要:研究了石灰石尾矿粉等质量替代0、10%、20%、30%、40%的水泥对全再生骨料混凝土工作性、力学性能和耐久性能的影响。结果表明:10%掺量的石灰石尾矿粉可以改善全再生骨料混凝土的工作性;随着石灰石尾矿粉掺量的增加,试件的抗压强度呈先增大后减小的趋势,最佳掺量为10%;10%掺量的石灰石尾矿粉可以改善全再生骨料混凝土的抗冻性能和抗碳化性能。 Abstract: The influence of limestone tailing powder content(0, 10%, 20%, 30%, 40%) on the workability, mechanical properties and durability of fully recycled aggregate concrete was studied. The results show that 10% limestone tailing powder can improve the workability of fully recycled aggregate concrete. With the increase of limestone tailing powder content, the compressive strength of the specimen increases first and then decreases, and the optimal content is 10%. 10% limestone tailing powder can improve the frost resistance and carbonation resistance of fully recycled aggregate concrete.
袁继东,任启富,范晓玲.石灰石尾矿粉对全再生骨料混凝土性能的影响[J].混凝土与水泥制品,2023(1):88-90,94. YUAN J D,REN Q F,FAN X L.Effect of Limestone Tailing Powder on the Properties of Fully Recycled Aggregate Concrete[J].China Concrete and Cement Products,2023(1):88-90,94.
基于拟水平法的脱硫灰混凝土配合比试验研究
基于拟水平法的脱硫灰混凝土配合比试验研究
  • 杨 俊1,谈嗣勇2,于 峰2,秦 尹2,崔克冉2,方 圆2,麦麦提·努尔麦麦提2
2023年第1期
摘要
引用本文
摘   要:采用拟水平法研究了脱硫灰掺量、粗骨料掺量和水胶比对脱硫灰混凝土抗压强度的影响。结果表明:水胶比对试件抗压强度的影响最显著,脱硫灰掺量次之,粗骨料掺量影响最小;随着水胶比的增加,试件的抗压强度下降;粗骨料掺量为0的试件抗压强度较粗骨料掺量为64%的试件低;随着脱硫灰掺量的增加,试件的抗压强度先增大后减小。脱硫灰混凝土的最佳配合比为:水胶比0.34、脱硫灰掺量20%、粗骨料掺量64%。 Abstract: The quasi horizontal method was used to study the influence of desulfurized ash content, coarse aggregate content and water-binder ratio on the compressive strength of desulfurized ash concrete. The results show that the water-binder ratio has the most significant effect on the compressive strength of the specimens, followed by the desulfurized ash content, and the coarse aggregate content has the least effect. With the increase of water-binder ratio, the compressive strength of the specimen decreases. The compressive strength of the specimen with 0 coarse aggregate content is lower than that of the specimen with 64% coarse aggregate content. With the increase of desulfurized ash content, the compressive strength of the specimen increases first and then decreases. The best mix proportion of desulfurization ash concrete is water-binder ratio of 0.34, desulfurized ash content of 20%, and coarse aggregate content of 64%.
杨俊,谈嗣勇,于峰,等.基于拟水平法的脱硫灰混凝土配合比试验研究[J].混凝土与水泥制品,2023(1):91-94. YANG J,TAN S Y,YU F,et al.Experimental Study on Mix Proportion Design of Desulfurized Ash Concrete Based on Quasi Horizontal Method[J].China Concrete and Cement Products,2023(1):91-94.
矿物掺合料改性磷酸镁水泥力学和耐久性能研究进展
矿物掺合料改性磷酸镁水泥力学和耐久性能研究进展
  • 朱金才1,2,曹 琪1,孟晓凯3,郭伯禹1
2023年第1期
摘要
引用本文
摘   要:总结了粉煤灰、偏高岭土、矿渣、硅灰等矿物掺合料改性磷酸镁水泥(MPC)的力学性能及耐久性能研究进展,基于现阶段研究中存在的问题,结合实际工程需求,对矿物掺合料改性MPC的研究及发展方向进行了展望。 Abstract: The research progress of mechanical properties and durability of magnesium phosphate cement (MPC) modified by mineral admixtures such as fly ash, metakaolin, slag, and silica fume is summarized. Based on the problems existing in the current research on MPC modified by admixture, combined with the actual engineering needs, the research and development direction are prospected.
朱金才,曹琪,孟晓凯,等.矿物掺合料改性磷酸镁水泥力学和耐久性能研究进展[J].混凝土与水泥制品,2023(1):95-98. ZHU J C,CAO Q,MENG X K,et al.Research Progress on Mechanical Properties and Durability of Magnesium Phosphate Cement Modified by Mineral Admixtures[J].China Concrete and Cement Products,2023(1):95-98.

读者之友

论文推荐

珊瑚碎屑混凝土的强度特性及破坏形态分析
珊瑚碎屑混凝土的强度特性及破坏形态分析
  • 王 磊1,2,范 蕾1,2
2015年第1期
摘要
引用本文
摘   要:针对目前对珊瑚碎屑混凝土的力学机理尚不清晰这一问题,对不同龄期和水灰比的珊瑚混凝土试块进行了试验研究。试验结果表明,珊瑚混凝土具有早强、快硬的特点;同时,当水灰比减小到一定程度后,单纯减小水灰比并不能明显提高珊瑚混凝土的抗压强度。本文从材料特性、界面特性以及龄期和水灰比等方面着手,对珊瑚混凝土的强度特性作了详细分析,并介绍了珊瑚混凝土的破坏形态,从而可为珊瑚碎屑应用于海岛混凝土工程提供一定的参考依据。 Abstract: Currently, the mechanical mechanism of coral debris concrete is not well understood, so the research on coral concrete test block in different age and water cement ratio is carried out. The test results show that coral concrete has the characteristics of fast strengthening and hardening, and when the water cement ratio decreases to a certain extent, simply reducing the water cement ratio could not result in obvious additions of compressive strength of coral concrete. From the aspects of material properties, interface properties,age and water cement ratio, the strength characteristics of the coral concrete are analyzed in detail, and the failure pattern is introduced, which can provide reference for application of coral debris in island concrete engineering.
王磊,范蕾. 珊瑚碎屑混凝土的强度特性及破坏形态分析[J].混凝土与水泥制品,2015(1):1-4. WANG L,FAN L.Strength Characteristic and Failure Pattern Analysis on Coral Debris Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(1):1-4.
装配式结构用高强套筒灌浆料性能试验研究
装配式结构用高强套筒灌浆料性能试验研究
  • 汪秀石,杨智良,吴照学
2015年第2期
摘要
引用本文
摘   要:研究了装配式结构用高强套筒灌浆料的性能,通过试配并进行了流动度、强度和膨胀性试验,优选出了优化配合比。同时基于优化配合比进行了水胶比、减水剂掺量和膨胀剂掺量对高强套筒灌浆料性能影响的研究。试验结果表明,随着水胶比(W/B)增加,流动度逐渐增大,但强度随W/B增加呈现明显降低趋势;减水剂可有效改善流动度,而当掺量过多时对强度有一定的影响;膨胀率随膨胀剂掺量增加呈现增长趋势,但当掺量小于8.0%时,膨胀效果较差,掺量大于12.0%时,对流动度和强度产生不利影响。 Abstract: The properties of high-strong cementitious grout for prefabricated concrete structure are studied, and the optimum mix proportion is elected by the tests of fluidity, strength and expansibility. The roles of W/B and the content of superplasticizer or expanders in high-strong cementitious grout for coupler are researched respectively based on the optimum mix proportion. The test results show that the fluidity of the grout increases with the increasing of W/B, but its strength has significantly decreasing trend; the fluidity of the grout can be improved effectively by superplasticizer, but its strength will decrease if superplasticizer content is excessive; expansion rate of the grout increases with the increasing of expanders agent content, but the expansibility is poor when the content is less than 8.0%, and it has an adversely affect on the liquidity and strength of the grout when the content is greater than 12.0%.
汪秀石,杨智良,吴照学.装配式结构用高强套筒灌浆料性能试验研究[J].混凝土与水泥制品,,2015(2):65-68. WANG X S,YANG Z L,WU Z X.Experimental Research on Performance of High-strong Cementitious Grouting for Prefabricated Concrete Structure[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(2):65-68.
再生粗骨料强化处理工艺对再生混凝土性能的影响
再生粗骨料强化处理工艺对再生混凝土性能的影响
  • 郭远新,李秋义,孔 哲,岳公冰,韩 帅
2015年第6期
摘要
引用本文
摘   要:分别采用物理强化、化学强化和物理-化学复合强化三种不同的强化方式对简单破碎再生粗骨料进行强化处理,并采用100%取代天然碎石制备再生粗骨料混凝土,研究了不同强化处理后的再生粗骨料对混凝土工作性能、力学性能、抗渗透性能和抗碳化性能的影响。结果表明,经过强化处理的再生粗骨料混凝土的各项性能均有不同程度的提高,其中经二次物理强化处理后的再生粗骨料混凝土的用水量较天然碎石混凝土仅增加了6kg/m3,其抗压强度也达到最高值,接近于天然碎石混凝土;经二次物理强化和化学浸渍复合强化处理后的再生混凝土氯离子扩散系数降低了13.6%;三种不同的强化方式处理后,再生混凝土的碳化深度和碳化速度均有所降低。 Abstract: Three kinds of different strengthening technologies of physical enhancement, chemical enhancement and physical-chemical compound enhancement to strengthen the simple crushing recycled coarse aggregate are adopted, with 100% replaced natural gravel preparation of recycled coarse aggregate concrete, and the influences of the recycled coarse aggregate of different strengthening treatment on the working performance, mechanical properties, penetration resistance and carbonation resistance of concrete are studied. The research results show that, through strengthening treatment, recycled coarse aggregate concrete properties are improved to different degrees, the water consumption of recycled coarse aggregate concrete after the secondary physical strengthen treatment is only increased by 6kg/m3 than that of natural gravel concrete. The compressive strength also reached the highest value, close to the natural gravel concrete. The chloride ion diffusion coefficient of recycled concrete after the secondary physical-chemical compound strengthening treatment is reduced by 13.6%. The depth of carbonation and carbonation velocity decrease after three kinds of different strengthening treatments.
郭远新,李秋义,孔哲,等.再生粗骨料强化处理工艺对再生混凝土性能的影响[J].混凝土与水泥制品,2015(6):11-17. GUO Y X,LI Q Y,KONG Z,et al.Influence of Strengthening Treatment Technology of Recycled Coarse Aggregate on Performance of Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(6):11-17.
无砂再生透水混凝土配合比设计
无砂再生透水混凝土配合比设计
  • 张松涛1,贾欣悦2,宋 卓1,贾艳东1
2016年第12期
摘要
引用本文
张松涛,贾欣悦,宋卓,等.无砂再生透水混凝土配合比设计[J].混凝土与水泥制品,2016(12):6-12. ZHANG S T,JIA X Y,SONG Z,et al.Design on Mix Proportion of No-fines Pervious Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2016(12):6-12.
清水混凝土概念、研究现状、存在问题及配合比设计方 综述
清水混凝土概念、研究现状、存在问题及配合比设计方 综述
  • 郭 伟1,路林海2,王龙志3,崔 鑫3,王桂玲4,张海霞3
2016年第10期
摘要
引用本文
摘   要:20世纪90年代后期以来,清水混凝土研究及工程应用得到了长足发展,许多城市建成了清水混凝土标志性工程。为了更好地促进清水混凝土研究的深入、工程质量的提高,对清水混凝土的概念、研究现状、存在问题及现有的清水混凝土配合比设计方法进行了系统地梳理、总结。通过对清水混凝土现状的研究,可使相关领域技术人员认识到清水混凝土发展中存在的不足、明确清水混凝土的研究方向,以实现清水混凝土技术研究水平的再提高,有力地支持清水混凝土工程应用的进一步推广。 Abstract: Since the late 1990s, research and application of fair-faced concrete has made considerable progress, many cities built landmark projects of fair-faced concrete. In order to better promote the study in-depth and the engineering quality improvement of fair-faced concrete, the concept, research status, existing problems and mixture design methods of fair-faced concrete are systematically reviewed and summarized. Through the above study of fair-faced concrete, the relevant technicians recognize the lack of fair-faced concrete in the development and realize a clear research direction, in order to improve research level, strongly support further promotion of fair-faced concrete in engineering applications.
郭伟,路林海,王龙志,等.清水混凝土概念、研究现状、存在问题及配合比设计方法综述[J].混凝土与水泥制品,2016(10):23-27. GUO W,LU L H,WANG L Z,et al.Summary for Concept, Research Status, Existing Problems and Mix Proportion Design of Fair-faced Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2016(10):23-27.
新型装配式建筑构件生产及其施工技术的研究与应用
新型装配式建筑构件生产及其施工技术的研究与应用
  • 范 玉1,4,徐 华2,黄 新3,黄继战4,马北京4
2015年第12期
摘要
引用本文
摘   要:通过对建筑PC构件的设计、生产、施工进行的研究,对建筑PC构件进行了再设计及优化,确定了合理的PC构件生产及其施工工艺方案,并对影响PC构件质量的相关因素进行了分析。 Abstract: Through the research on design of PC component, production and construction,  construction PC component is carried out for re-design and optimization. The reasonable PC component production and construction technology program are determined, and factors affecting the quality of PC are analyzed.
范玉,徐华,黄新,等.新型装配式建筑构件生产及其施工技术的研究与应用[J].混凝土与水泥制品,2015(12):87-89. FAN Y, XU H,HUANG X,et al.Research and Application of Production for New Type of Prefabricated Construction Component and Its Construction Technology[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(12):87-89.
石墨烯纳米片对水泥基复合材料力学性能的影响
石墨烯纳米片对水泥基复合材料力学性能的影响
  • 王 辉,刘爱红,李 航
2015年第12期
摘要
引用本文
摘   要:采用球磨法将石墨烯纳米片分散在水泥基体中,研究了石墨烯纳米片掺量对水泥基材料抗折强度和抗压强度的影响。实验结果表明,适量的石墨烯纳米片可均匀分散在水泥基体中,通过桥联效应和拔出效应对水泥基材料起增强增韧作用,当石墨烯纳米片掺量为0.04%时,石墨烯纳米片与水泥基体界面结合良好,没有明显过渡层,试件3d抗折强度和抗压强度分别提高了22.84%和23.61%。 Abstract: Graphene nanoplatelets (GNPs) were dispersed in the cement matrix by milling method. The effect of GNPs with different contents on the flexural strength and compressive strength of composites were studied. The results showed that well dispersed GNPs improved the mechanical properties of cement composites, owing to GNPs excellent pulling-out and bridging capability. When the GNPs content was 0.04%, the mechanical properties of cement composites were increased obviously. Its flexural and compressive strength increased by 22.84% and 23.61% respectively compared with the referee sample after curing 3 days. The interface between graphene nanoplatelets and cement was bonded well, with no obvious transition layer.
王辉,刘爱红,李航.石墨烯纳米片对水泥基复合材料力学性能的影响[J].混凝土与水泥制品,2015(12):25-27. WANG H,LIU A H,LI H.Influence of Graphene Nanoplatelets on Mechanical Properties of Cement-based Composites[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(12):25-27.
大型智能PC构件自动化生产线简介
大型智能PC构件自动化生产线简介
  • 孙 红1,孙 健1,吴玉厚1,赵凯军2
2015年第3期
摘要
引用本文
摘   要:根据混凝土工厂化生产的需要,阐述了大型智能PC构件生产线的组成部分、工艺过程和技术重点;分析了该生产线中蕴含的微观物流、信息采集、分布式控制及多智能体的协同过程,总结了PC构件生产线的优点和技术创新突破点,可为大型智能PC构件全自动生产线的研制提供理论基础和技术依据。 Abstract: According to the needs of the concrete factory production, the large scale intelligent automatic PC production line the technological process and technical keys of PC component are introduced, the cooperative process of microscopic logistics, information acquisition, distributed control and multi-agent systems are analyzed, the advantages and technology innovation of PC components production line are summarized, which can provide theoretical basis and technical basis for large scale intelligent automatic production line of PC components.
孙红,孙健,吴玉厚,等.大型智能PC构件自动化生产线简介[J].混凝土与水泥制品,2015(3):45-48. SUN H,SUN J,WU Y H,et al.Introduction of Large Scale Intelligent PC Automatic Production Line[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(3):45-48.
建筑垃圾再生微粉的研究现状
建筑垃圾再生微粉的研究现状
  • 毛新奇1,2,屈文俊1,朱 鹏1
2015年第8期
摘要
引用本文
摘   要:建筑垃圾再生微粉各项性能的研究是推进建筑垃圾资源化的重要基础。根据近年来国内关于再生微粉的主要研究成果,对材料来源、制备工艺、工作性能、力学性能和耐久性能等方面进行了综述,并对相关的影响因素进行了探讨分析。 Abstract: Research on the properties of utilization regeneration of powder for construction waste is the important foundation of resource utilization of construction waste. Based on the recent domestic research on recycled powder, material source, manufacturing process, workability, mechanical properties and the durability are reviewed. Besides, the related influence factors are discussed and analyzed.
毛新奇,屈文俊,朱鹏.建筑垃圾再生微粉的研究现状[J].混凝土与水泥制品,2015(8):89-93. MAO X Q,QU W J,ZHU P.Study Status of Recycled Powder for Construction Waste[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(8):89-93.
再生粗骨料及再生混凝土性能研究进展
再生粗骨料及再生混凝土性能研究进展
  • 甘 福1,周脉席1,3,濮 琦2
2018年第9期
摘要
引用本文
摘   要:结合国内外再生粗骨料混凝土的研究现状,综述了再生粗骨料性能、再生粗骨料混凝土性能、再生混凝土改性方法及改性后的混凝土性能等方面内容,展望了再生粗骨料及再生混凝土未来研究方向。 Abstract: Combining the study of recycled coarse aggregate concrete at home and abroad, the property of recycled coarse aggregate, the performance of recycled coarse aggregate concrete, the modified method of recycled concrete and the performance of modified concrete are reviewed, and the fature research direction on recycled coarse aggregate and recycled concrete is prospected.
甘福,周脉席,濮琦.再生粗骨料及再生混凝土性能研究进展[J].混凝土与水泥制品,2018(9):102-107. GAN F,ZHOU M X,PU Q.Research Progress of Performance of Recycled Coarse Aggregate and Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2018(9):102-107.
上一页
1
2
4

企业推荐

展会推荐

关闭 1

关注《混凝土与水泥制品》

总访问量 468,401   网站统计

官方微信公众号关闭
苏州混凝土水泥制品研究院有限公司

关于我们    |    联系我们    |    订购杂志    |    回到顶部

版权所有:中国混凝土与水泥制品网  苏ICP备10086386号   网站建设:中企动力 苏州

版权所有:中国混凝土与水泥制品网

苏ICP备10086386号

网站建设:中企动力 苏州